Add another vote for I Know This Much is True. I'm a sucker for works that flirt with "dark and quirky," but don't actually make the mistake of taking it to bed.

I own The Hour I first Believed but it's a big ol' honkin' hardcover from B.E. that's stuck in an unfortunate "I want to read it, but I don't really feel like hefting that monster -- nor do I want to buy it twice" state.